Packing-ring.



R. RAGAN.

PACKING RING.

APPLwATIoN funn 00T. s1,k 191s.

1,106,678. Patented Aug. 11, 1911 Attorneys RALPH RAGAN, OF ATLANTA, GEORGIA.

PACKING-RING.

Speoication of Letters Patent.

Patented Aug. 11,'f1914.

Application led 0ctobcr`2, 19113. Serial No. 793,030.

To all 'whom it may concern Be it known that I, RALPH Racen, a citi-I zen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented a new and useful Packing-Ring, of which the following is a specification.

TheJ present invention relates to improvements in packing rings, one object of the invention being the provision of a sectional ring adapted to be used in connection with both reciprocating and rotary pistons or valves, and which necessitates the grooving at a single point only of the piston or valve, the sections of the ring being so disposed as to pro erly pack between the piston andl the cylinder so as to prevent the escape of gas orfburnt charges in an ex losive engine and also the entrance of ubricating oil beyond the head of the piston into the explosion chamber.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the sco e of what is claimed without departing rom the spirit of the invention.

In the drawings-Figure 1 is a sectional view through a portion vot an explosion engine cylinder showing the piston with the present piston ring in place thereupon. Fig. 2 is a top plan view of the piston partly in section with the present piston ring in place. Fig. 3 is a perspective view of the complete ring per Se. Fig. 4 is a section through the ring showing the relative position of the sections thereof. F ig. 5 is a section similar to Fig. 4 of a modified form.

Referring to the drawings, the numeral 1 designates the cylinder which in the present case is the cylinder of an explosion engine, and 2 is a reciprocatin piston provided with the circumferentia groove 3 adjacent the upper end of the piston. The packing ring 4 is disposed in this groove and is composed of three or more sections, one section 5 being provided with the inclined joint 6 to provide an open ring, and said ring 5 being so disposed as to rest upon the upper edge ofthe main or lower ring 7 of the packing ring. The ring 7 is cut obliquely as at 8 and when the said rings 5 and 7 are. assembled, the open portions 6 and 8 are disposed at, diametrically opposite points. A recess or notch 9 is provided in the upper edge of the ring 7 adjacent the -cut away portion 8 thereof, while the recessed portion 10 is rovided in the lower ed e of thering5and orms,asclearlyshownin igs. 1 and 3, a rectangular aperture for the reception of the square head 14 of the locking screw 15. This screw 13 is threaded into the piston 2. The ring 11 is cut at 12 at a point substantially diametrically opposite to the cut 6 'of the ring 5, but slightly out of alinement with the cut 8 of the ring 7; and it is also recessed or notched, as the ring 7, to register with the square head 14 of the screw 13. It will be noted that when the rings are assembled, they assume the position, as clearly7 shown in Figs. 1 and 4, with the lower ring 7 which is of greater width than either ofthe rings 5 or 11, belowy both of said rings 5 and 11. By means of the screw pin 13, the sections 'are held relatively to each other against circumferential movement, while the recess 3 holds the rings against lateral separation.

It will 'be noted that the ring 7 is what is known as an eccentric expanding ring, and is the main carrying ring of the piston packing, and as clearly shown in Fig. 4, the sections 5 and 11 may be disposed thereabove, or as clearly shown in Fig. 5, additional sections 5'* and 11'I may 'be disposed therebelow with the ring 7 interposed.

By making the squared end 14 upon the screw 13 terminate within the outer periphery or circumference of the packing ring,

its outer end is prevented from scorlng the surface of the cylinder during the rotation or reci rocation of the piston, while the recess ho ds the screw against turning.

What` is claimed is:

1. The combination with a piston having a circumferential recess therein, ofa packing disposed in said recess and composed of three rings, one ofthe rings beingsubstantially the same thickness as the two rings combined and the two rings being nested and disposed to rest upon one edge of the thicker ring, the adjacent edges of the three rings at one point being provided with notches that fornA an aperture, and a screw carried by the piston and insertible in the aperture of thel rings to -lock the rings against independent movement and the oomplete packing against circumferential movement, the recess and the coperatin portion of the screw being angularly aped to lock the screw against rotation.

2. The combination with a piston having a circumferential recess, of a packing therefor seated in the recess, said packing being composed of three rings, two of the rings being nested and in combined cross sectional area being substantially the same cross sectional area as the remaining ring, the two nested rings being disposed toit adjacent one edge of the remaining ring and be disposed in circumferential aline-i ment therewith, all of said rings being open rings, said rings at one point of contact each bei provided with a notch to provide an angu ar aperture, and means carried within the recess of the piston and projecting in the angular aperture to secure the rings against independent circumferential movement and lock the securing means from rotation.

In testimony'that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

RALPH RAGAN.

Witnesses:

J. K. TIPPm'r, JAMES J. RAGAN. 

